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OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) - USD ($)
 7 Months Ended 12 Months Ended
Jul. 24, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Bonds were placed at an issue price   99.309%    
Description allocated funds   The funds from the issuance were allocated 50% to the refinancing of liabilities, 30% for the financing of investments and 20% for general corporate purposes.    
Total obligations with financial institutions   $ 7,193,527,000 $ 7,261,726,000 $ 11,038,612,000
Expiration of offer   238,412,000 54,007,000,000 85,070,000,000
Expiration of offer redeemed $ 238,162,000 250,000    
Unused bonds   262,000,000    
Obligation With The Public [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Total obligations with financial institutions   2,064,934,000 1,553,079,000 1,584,066,000
Bank Loans [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Total obligations with financial institutions   217,255,000 $ 222,741,000 $ 321,633,000
Latam Finance Limited [Member] | Obligation With The Public [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Unsecured long-term bonds for a nominal amount   $ 600,000,000    
Annual interest rate   7.00%    
Latam Finance Limited [Member] | Series C Bond [Member] | Obligation With The Public [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Borrowings, maturity   The total amount issued was UF 5,000,000 with an expiration date on April 15, 2029 and a 3.60% annual coupon rate with semiannual interest payments. The placement rate was 2.73%, equivalent to an amount of ThUS$ 215,093.    
Tam Linhas Aereas S.A. [Member] | Bank Loans [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Description of collateral   On July 11, 2019, LATAM Finance Limited, a company incorporated in the Cayman Islands with limited liability and exclusive property of LATAM Airlines Group SA, issued a re-opening of the LATAM 2026 bond, issued on February 11 of 2019, for US $ 200,000,000. This re-opening had a placement rate of 5.979%.    
TAM Capital 3 Inc [Member] | Obligation With The Public [Member]        
OTHER FINANCIAL LIABILITIES (Details) - (Details Narrative) [Line Items]        
Total obligations with financial institutions   $ 500,000,000